{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "498304",
    "entityType": "User",
    "nonce": "0xad7f83faa78b6d411735c2ab8453b5868e8847bf520afd379661e7ef29f95734",
    "signature": "0xa44b56c1338a0ed5776d7a17dd071fe463b2791caa04785a45e4c8bce22c494368e0343351622ccaff359f46a6c5152a54f399c2922ca7f62d0f5577653f77b01c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}